It's a feature you'll probably end up using all the time without even noticing it. I just wrote a class to keep track of changes to an object using proxies yes

It's a feature you'll probably end up using all the time without even noticing it. I just wrote a class to keep track of changes to an object using proxies yesterday. That way you can pass an object to a form, modify it in place and then roll back if needed. Also makes it easy to get deltas and only post the updates to the backend.